Float-valve.



R. H. KURTH.

FLOAT VALVE.

APPLlCATION FILED SEPT. 18, 1914.

1 177 1 9 1 Patented Mar. 28, 1916.

claim srs arnnr @FFlQE.

RUDOLF H. KUR'IH, OF CHICAGO, ILLINOIS.

FLOAT-VALVE.

the following is a full, clear, and exact def scription of the. same,reference being had to the accompanying. drawings, and to. the numeralsof reference ,marked thereon, which form a part of this specification.

This invention relates to an improved form of float controlled valve forgoverning the inlet of water to a reservoir. By this invention arotarytype of gate valve is operatively connected'with a. float, capableof a certain amount of longitudinal movement whereby, when the valvefisin open position, the closure rests loosely upon its seat, and when inclosed position, is forced tightly thereon.

It is an object of this invention to construct a valve having a closurerotatable upon a seat, said seat and closure provided with aperturesadapted to register with one another when the valve is in open position,and the mechanism so constructed as to permitt longitudinal displacementof the closure away from the seat when moving into open position, andtoward the same, when moving into closed position toinsure sealing ofthe apertures then out of register.

It is also an object of this invention to construct a valve, the closureof which is rotatable and apertured to open and close apertures in thevalve seat, and is also movable longitudinally a] slight 7 amount,

whereby mechanism guided in a cam slot acts to force said closuretightly upon the seat when the same is rotated into closed position, toinsure a tight seal thereof.

It is also an important object of this invention to construct avalveprovided with an apertured disk closure rotatable upon an aperturedseat. and mounted at the end of a longitudinally movable stem, said stemhaving at its outer end means loosely engaged by a float lever andguide-din a cam slot, whereby rotation of said stem causes the same tomove longitudinally, acting to clamp the disk closure tightly upon theseat when the valve is in closed position.

It is finally an object of this invention to improve the construction offloat controlled valves whereby in certain positions the pres-Specification of Letters Patent.

Patented an. as, 1916.

Application filed September 18, 1914. Serial No. 862,261.

sure of the closure upon the washer or seat is relieved to preventexcessive friction and wear, and permit easy opening and closing of thevalves.

The invention (in a preferred form) is illustrated in thedrawings andhereinafter more fully described.

In the drawings; Figure 1 is arcentral vertical section taken through areservoir illustrating the same equipped with a float gcontrolled inletvalve embodying the principles of my invention. Fig. 2 is an enlargedfragmentary side'view of the device with the float and floatroddetached. Fig. 3 is a section taken on line 33 of Fig. 2, with partsshown in elevation. Fig. alis a section taken on line tl of Fig. 3, withparts shown in elevation. Fig. 5 is an end view of the device with. thefloat lever and float omitted. Fig. 6 is a view of the other end thereofwith theinlet pipe detached.

As shown in the drawings: The reference numeral 1, indicates as a wholea reservoir, which may be of any desired configuration,

and having an inlet pipe 2, opening there into through an aperture inthe bottom,

suitably sealed by means of nuts and washers 3 and 4:, respectively. Anupright pipe 5, is threaded into the end of said inlet pipe 2, and atits upper end is provided with an elbow 6, upon which the valve isconnected and supported. The valve consists of a barrel 7 which atoneend is internally threaded and attached upon said elbow 6, with apartition wall 8, extending across the interior thereof and providedwith a number. of apertures 9. A downwardly directed outlet pipe 10 isthreaded into the under side of said barrel 7, and is adapted to permitoutlet of the, fluid entering into the interior of said valve throughthe apertures 9, in the partition wall. A valve stem 11, extends axiallythrough said barrel 7, and at one end is provided with a circular diskclosure 12,

secured thereon to rotate therewith, said disk having a number ofapertures 13, adapted to register with the apertures 9, in the partitionwhen the valve is in open position. An apertured fiber washer 14:, is

interposed between said valveclosure 12,

and the face of said partition wall 8, said washer being sprung intoposition or aflixed to said partition in any suitable manner, of coursewith its apertures in register with the apertures 9, of the partition.The actuating end of said stem 11, extends rearthe outer end of saidstem 11, all'ords a. rigid connection therebetween and a laterallydirected short rod or lever 18. An integral curved or cylindricallyshaped extension 19 projects rearwardly from said barrel 7, and isprovided with an inclined cam slot 20, through which said rod 18, isadapted to move. F or the purpose of actuating the valve, a relativelylong float lever 21, is pivotally connected to said extension 19, bymeans of a thumb screw 22, and is provided with an enlarged aperturethrough which said rod 18, loosely engages, the outer end of said leverhaving a float 23, of spun copper many other suitable material securedthereon. An air vent pipe 24, communicates in the upper end of saidbarrel 7, and acts to prevent any augmentation of pressure therein, dueto rise of the level of the water in the reservoir.

The operation is as follows: lVhen the float is in the lower positionshown in Fig. 1, the weight thereof on said lever 21, acts to pulldownwardly upon the rod 18, thus rotating the valve stem 11, to open thevalve. Furthermore, due to the inclination of the cam slot 20, throughwhich said rod 18, projects, the valve stem 11, is moved inwardly withinsaid barrel 7, so that the valve closure 12, is displaced from thewasher 14, and of course adjustments oil? said valve with the frictionthus obviated, are easily made. However, when the level ofthe waterwithin the reservoir 1, rises, due to the flow of water through theinlet pipe 5, and into the reservoir through the long outlet pipe 10,the valve stem 11, is rotated to move the apertures 13, of the closure12, out of register with the apertures in the washer and valve seat.Furthermore the-cam slot 20 causes the valve stem 11 ,to be movedoutwardly, thus compressing the valve closure tightly upon the fiberwasher 14, insuring an effective seal for the closed valve. The looseconnection between the lever float rod 21, and said short stem or rod18, permits the small amount of play necessary due to movement of thevalve stem 11, longitudinally within said barrel. The air vent pipe 24,serves a double purpose, namely to prevent augmentation of pressurewithin the barrel 7, as the level of water within the reservoir rises,and also to prevent siphoning of the water from the reservoir throughsaidpipe 5, in the event that the inlet flow of water should fail. Thedevice operates exceedingly eliiciently and very silently, owing "to'the fact that the outlet pipe 10, admitting the water into thereservoir, eX- tends to near the bottom thereof.

I am aware that various details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted otherwise thannecessitated by the prior art.

I claim as my invention:

lJIna device of the class described, a barrel, an aperturedpartitiontherein, a 1'0- tatable disk closurehaving apertures therein adapted to,register with the apertures in said partition when the device is open, astem for rotating said closure, means for rotating said stem, and cammechanism on said barreland stem forcausing longitudinalniovement ofsaid stem'during the open' ing and closing movementsof the disk.

2. Ina valve of the class described, a barrel, a seat therein having aplurality of apertures therethrough, a rotatable disk closure havingapertures therein adapted to be registered with the apertures in saidseat, when the valve is open, a valve stem extending axially throughsaid barrel and secured to sald closure to operate the same, an integralextension on said barrel havingan inclined cam slot therein, andmeanssecured to said valve stem and engaging in said cam slot to causelongitudinal movement of said stem and disk closure. when the same arerotated.

3. In a device of the class described, a barrehan apertured partitiontherein, an apertured washer secured upon said partition, a rotatableflat disk closure having apertures therein adapted to be registered Withthose in said washer when the device is open, a stem for rotating saidclosure and movin the same longitudinally toward and away trom saidwasher during closing and opening movements of the valve, a lever forrotating said stem, and guiding means for causingsaid longitudinalmovement of said stem.

In testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

BUDOLF H. EUR-TH.

Witnesses:

CHARLES 1V. I'IILLS, J12, FRANK K. I-IUosoN.

Copies of vthis patent may be obtained for five cents each. by'addressing the "Commissioner of Patents, Washington; D. C.

